Chronic tubulo-interstitial nephritis
Chapter 14:Diseases of the genitourinary system
ICD-10 N11 is a billable code used to indicate a diagnosis of chronic tubulo-interstitial nephritis.
Chronic tubulo-interstitial nephritis (CTIN) is a progressive kidney disease characterized by inflammation and fibrosis of the renal interstitium and tubules. It can result from various etiologies, including prolonged urinary tract obstruction, recurrent urinary tract infections (UTIs), and exposure to nephrotoxic agents such as certain medications. Pyelonephritis, a type of kidney infection, can lead to CTIN if recurrent or untreated, causing damage to the renal parenchyma. Drug-induced nephropathy, particularly from nonsteroidal anti-inflammatory drugs (NSAIDs) and certain antibiotics, can also contribute to the development of CTIN. Patients may present with symptoms such as fatigue, hypertension, and signs of renal impairment. Diagnosis typically involves a combination of clinical evaluation, laboratory tests, and imaging studies to assess kidney function and structure. Management may include addressing underlying causes, such as treating UTIs or discontinuing nephrotoxic drugs, and may involve the use of antibiotics for infections. Long-term monitoring of renal function is essential to prevent progression to end-stage renal disease.
Detailed history of renal function, laboratory results, and imaging studies.
Management of patients with chronic kidney disease secondary to CTIN.
Ensure documentation reflects the chronic nature and any contributing factors.
Records of urinary tract infections, imaging studies, and surgical interventions.
Patients with recurrent UTIs leading to chronic kidney damage.
Document any surgical history related to urinary tract obstruction.
Used to evaluate renal function and detect urinary tract infections.
Document the reason for urinalysis and any relevant patient history.
Nephrologists may require additional lab tests to assess kidney function.
Common causes include recurrent urinary tract infections, prolonged use of nephrotoxic medications, and chronic obstruction of the urinary tract.
